PAGE 23 Community R1 Series Owner’s Manual
12
IN CASE OF DIFFICULTY
Should you have a problem with your Community R1 loudspeaker, find the symptom and follow the associated
“What To Do” instructions. Be aware that a particular symptom may have several possible causes. Please
refer to the appropriate section in this manual if you need more detailed information.
SYMPTOM
PROBABLE CAUSE
WHAT TO DO
No sound.
Equipment is turned off.
Check and make sure that all equipment in the audio signal path is
turned on. When turning on any piece of equipment, the amplifier
should be not be turned on until all equipment before it is turned on.
No sound
Bad or open connection
Make sure the signal and input wire connections for all connectors
in the system and to all terminal screws are properly connected or
soldered. Make sure all wire and cables are intact and not severed
or damaged.
No sound
Crossover or all the drivers
have completely failed
This would be an unusual cause but could occur with severe abuse
or an adverse amplifier failure. All other possibilities should be
explored before assuming this is the cause. If it is, replace or repair
the failed components.
No sound or very low volume.
System control is turned
down.
Check to make sure that the audio signal to the amplifier is high
enough to drive it properly. Check all volume/level controls and gain
switches in the system including the amplifier input attenuator.
Low volume level.
System electronic gain is too
low.
Check to make sure that the audio signal to the amplifier is high
enough to drive it properly. Check all volume/level controls and gain
switches in the system including the amplifier input attenuator.
Low volume level.
Signal or speaker wire
connection is shorted
Make sure the wire connections inside all system connectors are not
shorted. Even one small wire strand shorting the +/- terminals either
before or after the amplifier can cause this problem.
Volume level drops and comes back.
The crossover protection
circuits have been activated.
This usually means that the loudspeaker is being constantly
overdriven and the crossover protection circuits are reducing the
power to the loudspeaker as a protective measure, which is normal.
Reduce the volume level to the loudspeaker.
Sound cuts in and out.
Bad connection.
Check all connections an cabling for shorts or loose connections.
During high output operation the
volume drops suddenly and does not
come back.
The crossover protection
circuits have “given up”.
This usually means that the loudspeaker was continually overdriven
for an extended period and the protection relays have “fused” in
their protect mode. The crossover must be repaired.
Distortion, low volume, or no volume
from any or all drivers
Cold/open solder joint on the
crossover or faulty wiring
connection.
Using an ohmmeter, check the continuity of the crimp connectors,
all solder joints on the crossover and the wiring to the drivers. Also
visually inspect solder joints as cold joints may only malfunction with
higher current than an ohmmeter supplies. Repair as needed
Distortion from the loudspeaker at
higher volume levels.
Too little amplifier power.
If the amplifier being used is too low power, it will clip at higher
volume levels. Reduce the volume level or use a more powerful
amplifier equal to the loudspeaker’s “Program” power rating.
Distortion from the loudspeaker at
higher volume levels.
Driver is malfunctioning.
Using a sine wave oscillator or wide range program at moderate
levels, listen to each driver to isolate the problem. Repair or replace
as needed.
No volume for the bass frequencies.
Low frequency driver or
crossover is malfunctioning.
Using an ohmmeter, measure the resistance of the input cable (with
the amplifier disconnected). If the meter does not read ~7 ohms,
the LF driver may not be working. Repair or replace as needed.
Low or no volume for the high
frequencies.
High frequency driver or
crossover is malfunctioning.
While right in front of the loudspeaker, listen at low level for high
frequencies. If some are heard and are not distorted, it is probably a
crossover problem. If distorted or no sound is heard, the HF driver
may not be working properly. Repair or replace as needed.
Noises from the loudspeaker (buzzes
or rattles).
Grille or hardware is loose.
Make sure the front grille screws are firmly tightened; that any
external mounting hardware is tightened or secured from vibrating
(especially if chains or wires are used in the mounting).
Noises from the loudspeaker (buzzes
or rattles).
Driver is malfunctioning.
Using a sine wave oscillator or wide range program at moderate
levels, listen to each driver to isolate the problem. Repair or replace
as needed.
